Techniques to Rectify the QuickBooks Invalid Product Number Error QUICKBOOKS INVALID PRODUCT NUMBER ERROR Issues while running the POS function in QuickBooks can appear in many forms, including the QuickBooks invalid product number error message. This error can arise while trying to register or open the POS function and can be a result of an incorrect product code or damaged POS installation. If you encounter the QuickBooks Invalid Product Number Error, you can follow the reliable steps given below to eliminate the issue. If you are unable to follow the given solutions, and these steps seem time-consuming or challenging, you can call our team of QB experts at +1-855-738-2784 to get immediate guidance with the POS problems in the app. List of Common Reasons and Scenarios for QuickBooks Error 176109 QuickBooks POS error 176109 can arise due to the main causes and factors mentioned below 1. The entitlement folder in QuickBooks POS might be damaged or corrupted, and the folder might be located in an invalid path. 2. The product code required to register and access QuickBooks POS might be invalid, incorrect, or unavailable to the user. 3. Your current user account might lack admin rights, which can lead to privilege issues while running the POS features. 4. The POS function in QuickBooks might be incorrectly installed, and the function might be misconfigured or incompatible with the current QB version. 5. Your QuickBooks Desktop app might be old, outdated, or discontinued by Intuit, and the current version might prevent users from accessing the POS functions. Effective Methods to Easily Tackle QuickBooks Desktop POS Error 176109 The invalid product number error in QuickBooks Desktop can be easily terminated by using the reliable solutions mentioned below – Solution 1 - Delete the POS User from the Accounts Section of the Control Panel You can terminate the QuickBooks POS invalid product number Windows 10 error by deleting the user account 1. Open the Control Panel of the Start menu and choose the User Accounts section to hit the Manage Another Account option. 2. Select Continue and click the QBPOSDBSrvUSER option to hit Delete, then confirm the actions and reboot your PC to rerun the POS function. Solution 2 - Reinstall QuickBooks POS from the Programs Tab of the Control Panel Issues while accessing the POS function can be fixed by reinstalling the feature from the programs menu. 1. Access the Control Panel from the Windows Start menu and choose the Programs and Features option to hit the Uninstall a Program button. 2. Double-click the QuickBooks POS option and choose Uninstall/Change to initiate the uninstallation process, then wait for the process to complete. 3. Lastly, reinstall QuickBooks POS via a setup file on a CD or download it from Intuit's website, and once done, check the status of the invalid product code issue. Conclusion You can easily tackle QuickBooks invalid product number error by following the detailed steps given above. If these solutions seem ineffective in fixing the POS issues, you can call our team of QB technicians at +1-855-738-2784 to get direct help with the error.